<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品添加</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card >
            <el-alert title="文案" type="info" center show-icon :closable="false"></el-alert>
            <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>
            <el-form :model="addForm" :rules="addRules" ref="addRef" label-width="100px" label-position="top">
                <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeLeave" @tab-click="tabClick">
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="goods_cat">
                            <el-cascader
                                v-model="addForm.goods_cat"
                                expand-trigger="hover"
                                :options="cateList"
                                :props="cateProps"
                                @change="handleChange">
                            </el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" :key="item.attr_id" v-for="item in manyTableData" >
                            <el-checkbox-group v-model="item.attr_vals">
                                <el-checkbox border :label="item" :key="index" v-for="(item,index) in item.attr_vals"></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" :key="item.attr_id" v-for="(item) in onlyTableData">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>

                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload
                            class="upload-demo"
                            action="http://127.0.0.1:8888/api/private/v1/upload"
                            :on-preview="handlePreview"
                            :on-remove="handleRemove"
                            :file-list="fileList"
                            :headers="headerObj"
                            :on-success="handleSuccess"
                            list-type="picture">
                            <el-button size="small" type="primary">点击上传</el-button>
                            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <quill-editor
                            ref="QuillEditor"
                            v-model="addForm.goods_introduce"
                            >
                        </quill-editor>
                        <el-button type="primary" style="margin-top: 15px;" @click="add">添加商品</el-button>
                    </el-tab-pane>
                </el-tabs>
            </el-form>
            
        </el-card>
        <el-dialog
            title="图片预览"
            :visible.sync="previewDialogVisible"
            @closed="closedPreviewDialog"
            width="50%">
            <img :src="previewPath" width="100%">
        </el-dialog>
    </div>
</template>
<script>
import _ from 'lodash'
export default {
    data(){
        return{
            activeIndex:'0',
            cateList:[],
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                goods_cat:[],
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            addRules:{
                goods_name:[
                    {
                        required:true,
                        message:'请输入商品名称',
                        trigger:'blur'
                    }
                ],
                goods_price:[
                    {
                        required:true,
                        message:'请输入商品价格',
                        trigger:'blur'
                    }
                ],
                goods_weight:[
                    {
                        required:true,
                        message:'请输入商品重量',
                        trigger:'blur'
                    }
                ],
                goods_number:[
                    {
                        required:true,
                        message:'请输入商品数量',
                        trigger:'blur'
                    }
                ],
                goods_cat:[
                    {
                        required:true,
                        message:'请选择商品分类',
                        trigger:'blur'
                    }
                ]
            },
            cateProps:{
                // expandTrigger: 'hover',
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            manyTableData:[],
            onlyTableData:[],
            fileList:[],
            headerObj:{
                Authorization:window.sessionStorage.getItem('token')
            },
            previewPath:'',
            previewDialogVisible:false,
        }
    },
    created(){
        this.getCateList();
    },
    computed:{
        cateId(){
            if(this.addForm.goods_cat.length == 3){
                return this.addForm.goods_cat[2]
            }else{
                this.$message.error('获取商品分类ID失败');
                return '';
            }
            
        }
    },
    methods:{
        async getCateList(){
            const {data:res} = await this.$http.get('categories');
            if(res.meta.status == 200){
                this.$message.success(res.meta.msg);
                console.log(res.data);
                this.cateList = res.data;
            }else{
                this.$message.error(res.meta.msg);
            }
        },
        handleChange(){
            console.log(this.addForm.goods_cat);
            if(this.addForm.goods_cat.length != 3){
                this.addForm.goods_cat = [];
            }
        },
        beforeLeave(activeName,oldActiveName){
            // console.log(this.addForm.goods_cat.length);
            if(this.addForm.goods_cat.length != 3){
                this.$message.warning('请选择商品分类');
                return false;
            }else{
                return true;
            }
        },
        async tabClick(){
            if(this.activeIndex == '1'){
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                    params:{
                        sel:'many'
                    }
                })
                // console.log(res);
                if(res.meta.status == 200){
                    this.$message.success(res.meta.msg);
                    console.log(res.data);
                    res.data.forEach(item=>{
                        console.log(item.attr_vals);
                        item.attr_vals = item.attr_vals.length==0?[]:item.attr_vals.split(' ');
                    })
                    this.manyTableData = res.data;
                }else{
                    this.$message.error(res.meta.msg);
                }
            }else if(this.activeIndex == '2'){
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
                    params:{
                        sel:'only'
                    }
                })
                // console.log(res);
                if(res.meta.status == 200){
                    this.$message.success(res.meta.msg);
                    console.log(res.data);
                    // res.data.forEach(item=>{
                    //     console.log(item.attr_vals);
                    //     item.attr_vals = item.attr_vals.length==0?[]:item.attr_vals.split(' ');
                    // })
                    this.onlyTableData = res.data;
                }else{
                    this.$message.error(res.meta.msg);
                }
            }
        },
        handlePreview(file){
            this.previewPath = file.response.data.url; 
            this.previewDialogVisible = true;
        },
        handleRemove(file){
            const filePath = file.response.data.tmp_path;
            const index = this.addForm.pics.findIndex(x=>{
                return x.pic == filePath
            })
            this.addForm.pics.splice(index,1);
            console.log(this.addForm);
        },
        handleSuccess(response){
            if(response.meta.status == 200){
                this.addForm.pics.push({
                    pic:response.data.tmp_path
                })
                this.$message.success(response.meta.msg)
                console.log(this.addForm);
            }else{
                this.$message.error(response.meta.msg)
            }
            
        },
        closedPreviewDialog(){
            this.previewDialogVisible = false;
            this.previewPath = '';
        },
        add(){
            this.$refs.addRef.validate(async valid=>{
                if(valid){
                    const form = _.cloneDeep(this.addForm);
                    form.goods_cat = form.goods_cat.join(',');
                    this.manyTableData.forEach(item=>{
                        const newInfo = {
                            attr_id:item.attr_id,
                            attr_value:item.attr_vals.join(' ')
                        };
                        this.addForm.attrs.push(newInfo);
                    })
                    this.onlyTableData.forEach(item=>{
                        const newInfo = {
                            attr_id:item.attr_id,
                            attr_value:item.attr_vals.join(' ')
                        };
                        this.addForm.attrs.push(newInfo);
                    })
                    form.attrs = this.addForm.attrs;
                    console.log(form);
                    const {data:res} = await this.$http.post('goods',form);
                    if(res.meta.status == 201){
                        this.$message.success(res.meta.msg);
                        this.$router.push('/goods')
                    }else{
                        this.$message.error(res.meta.msg);
                    }
                }else{
                    this.$message.error('数据合法性校验失败');
                }
            })
        }
    }
}
</script>
<style lang="less" scoped>
.el-checkbox {
    margin: 0 5px 0 0 !important;
}
</style>